Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X Configuration Manual page 351

ip domain-lookup
ip domain-name
ip name-server
host1:boston(config)#ip domain-name urlofinterest.com
host1:boston(config)#ip name-server 10.2.0.3
host1:boston(config)#ip name-server 10.2.5.5
Use to enable the system to query the configured DNS name servers when it
needs an IP-hostname-to-IP-address translation.
Domain lookup is disabled by default.
Example
host1(config)#ip domain-lookup
Use the no version to disable domain lookup.
See ip domain-lookup.
Use to define a default domain name for the clients that a name resolver serves.
You must define a default domain name for each name resolver. Multiple name
resolvers can use the same default domain name.
If you map an unqualified hostname (one without a domain name) to an IP
address with the host ftp command, the domain name is appended to the
hostname before the name is stored in the host table.
Example
host1(config)#ip domain-name bigcompany.com
Use the no version to delete the domain name; that is, the domain name will
no longer be appended to hostnames in the static host table.
See ip domain-name.
Use to specify a DNS name server that the system can query for
hostname-to-IP-address resolution.
This command supports both IPv4 and IPv6 addressing formats.
Example
host1(config)#ip name-server 192.168.25.100 1:2:3:4:5:6:7:8:9:0:a:b:c:d:e:f
Use the no version to delete the name server.
See ip name-server.
Chapter 5: Managing the System
321
Configuring DNS